Cover
Vol. 21 No. 3 (2021)

Published: October 31, 2021

Pages: 50-54

Original Article

Numerical Analysis of Hollow Cross Section Reinforced Concrete Beams Strengthened by Steel Fibers Under Pure Torsion

Jawad K. Mures 1 Aqeel H. Chkheiwer 1 Mazin A. Ahmed 1
1 Department of Civil Engineering, College of Engineering, University of Basrah, Basrah, Iraq
History
  • Received: June 11, 2021
  • Revised: July 22, 2021
  • Accepted: August 2, 2021
  • Available Online: October 5, 2021
DOI

https://doi.org/10.33971/bjes.21.3.6

Abstract

This numerical study aimed to investigate the torsional behaviour of hollow cross section reinforced concrete members strengthened with steel fibers (end hooked and corrugated), subjected to pure torsion. The numerical results were compared with experimental results and show good agreement. The experimental study was conducted on ten steel fiber reinforced concrete specimens with low longitudinal reinforcement ratio to investigate the torsional behavior under pure torsion. For this analysis, a computer program (ANSYS 18.2) was used. The brick elements 8-nodes (SOLID65) were used to concrete simulation, while the steel bars simulated as axial members (link 180). The steel fibre was represented theoretically by the stress-strain relationship. The theoretical results indicated that the adopted smeared crack model is capable of making relatively acceptable estimations of cracking and ultimate torsional capacity of the members.

Keywords

References

  1. I. S. I. Harba, “Nonlinear finite element analysis of confined high strength concrete columns under concentric and eccentric loadings”, Journal of Engineering and Development, Vol. 16, No. 3, pp. 1-18, 2012. https://www.iasj.net/iasj/download/a861ad75af6d6584
  2. T. Tavio and A. Tata, “Predicting nonlinear behavior and stress-strain relationship of rectangular confined reinforced concrete columns with ANSYS”, Civil Engineering Dimension, Vol. 11, No. 1, pp. 23-31, 2009. https://ced.petra.ac.id/index.php/civ/article/view/17027
  3. ANSYS Inc, “Ansys mechanical APDL element reference”, Southpoint, Technology drive, Canonsburg, PA15317, 2018.
  4. F. A. Tavarez, “Simulation of behavior of composite grid reinforced concrete beams using explicit finite element methods”, M.Sc. thesis, Civil Engineering, University of Wisconsin-Madison, 2001.
  5. ACI Committee 318 Building Code Requirements for Reinforced Concrete, (ACI 318-08), American Concrete Institute, Detroit, 2008.
  6. S. K. Mohaisen, A. A. Abdulhameed and M. M. Kharnoob, “Behavior of Reinforced Concrete Continuous Beams under Pure Torsion”, Journal of Engineering, Vol. 22, No. 12, pp. 1-15, 2016. https://joe.uobaghdad.edu.iq/index.php/main/article/view/107
  7. Iraqi Specifications IQ.S. No. 45, “Iraqi Standard Specification for Aggregates of Natural Resources used for Concrete and Construction”, Central Organization for Standardization and Quality Control, 1984.
  8. A. J. Wolanski, “Flexural behavior of reinforced and prestressed concrete beams using finite element analysis”, M.Sc. thesis, Faculty of the graduate school, Marquette University, 2004. https://epublications.marquette.edu/theses/4322/
  9. ASTM C469-02, “Standard Test Method for Static Modulus of Elasticity and Poisson's Ratio of Concrete in Compression”, Vol. 4.2, pp. 1-5, 2002.
  10. D. Mostofinejad and S. B. Talaeitaba, “Nonlinear Modeling of RC Beams Subjected to Torsion using the Smeared Crack Model”, Elsevier, Procedia Engineering, Vol. 14, pp.1447-1454, 2011.
  11. I. A. S. Al-Shaarbaf, A. N. Attiyah, and M. S. Shuber, “Non-linear Finite Element Analysis of Prestressed Concrete Member under Torsion”, Kufa Journal of Engineering, Vol. 4, No. 2, pp. 29-51, 2013.